There are about 2700 clinical studies being (or have been) conducted in Bulgaria. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The primary objective is to demonstrate the effect of teriflunomide (HMR1726) (14 milligram per day [mg/day] and 7 mg/day), in comparison to placebo, for reducing conversion of participants presenting with their first clinical episode consistent with multiple sclerosis (MS) to clinically definite multiple sclerosis (CDMS). The secondary objectives are: - To demonstrate the effect of teriflunomide, in comparison to placebo, on: - Reducing conversion to definite multiple sclerosis (DMS) - Reducing annualized relapse rate (ARR) - Reducing disease activity/progression as measured by Magnetic Resonance Imaging (MRI) - Reducing accumulation of disability for at least 12 weeks as measured by the Expanded Disability Status Scale (EDSS) - Proportion of disability-free participants as assessed by the EDSS - Reducing participant-reported fatigue - To evaluate the safety and tolerability of teriflunomide - To evaluate the pharmacokinetics (PK) of teriflunomide - Optional pharmacogenomic testing aimed at assessing the association between the main enzyme systems of teriflunomide metabolism and hepatic safety, and other potential associations between gene variations and clinical outcomes
Picoplatin is a new type of platinum drug that has been investigated in several clinical trials, and may provide an improved safety profile over current treatment options. This study is designed to compare the efficacy and safety of picoplatin plus Best Supportive Care (BSC) with BSC alone. Best Supportive Care includes care and treatment to optimize the comfort of patients and their ability to function, as well as to minimize the side-effects of anti-cancer treatments.
The purpose of this study is to determine if Cediranib when added to chemotherapy is more effective than chemotherapy alone in prolonging life expectancy and slowing disease progression in patients with previously untreated metastatic colorectal cancer.
The purpose of this study is to assess the benefits and risks of treating very elderly (those aged 80 or older) individuals with hypertension.
This study is designed to evaluate the safety and antiviral activity of tenofovir disoproxil fumarate (TDF, tenofovir DF) compared to adefovir dipivoxil (ADV) for the treatment of HBeAg-positive chronic hepatitis B. Participants will receive either TDF or the approved hepatitis B therapy ADV. After 48 weeks all participants will be switched to open-label TDF.
RATIONALE: Interferon alfa may interfere with the growth of the cancer cells. It is not yet known if this treatment is more effective than observation following surgery for stage III melanoma. PURPOSE: Randomized phase III trial to determine the effectiveness of interferon alfa in treating patients who have undergone surgery for stage III melanoma.
RATIONALE: Interferon alfa may interfere with the growth of cancer cells. It is not known whether giving high-dose or low-dose interferon alfa is more effective than no further therapy in treating patients with stage III melanoma. PURPOSE: Randomized phase III trial to compare the effectiveness of high- or low-dose interferon alfa with that of no further therapy following surgery in treating patients who have stage III melanoma.